Spa Frog Mineral Cartridge - Floating & Inline Systems Review

If you have a spa frog you need the cartridge.

Good seller, too.

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Product Description:
Spa Frog Mineral Cartridge refill for using in either the Spa Frog Floating System, or for users of the Spa Frog Inline System which is factory-installed in their spas. Product notes: Replace the mineral cartridge every 4 months when you drain and refill your spa. (The bromine cartridge will last 2-4 weeks depending on use). Refill cartridges are not for the Spa Frog In-Filter stick, which is not refillable.

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